CVE-2026-19552

ssl.get_server_certificate(addr, ca_certs=...) verifies the chain but never the identity

Published Nov 9, 2026 CVSS 4.0 · 0 Low EPSS < 1% KEV · Not listed
Description
When ca_certs parameter was supplied to ssl.get_server_certificate() function, the identity of the certificate is not checked.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Weaknesses CWE-295
Type Values Removed Values Added
First Time appeared Python
Python cpython
Python Software Foundation
Python Software Foundation cpython
Vendors & Products Python
Python cpython
Python Software Foundation
Python Software Foundation cpython
Type Values Removed Values Added
Weaknesses CWE-297
Type Values Removed Values Added
Description When ca_certs parameter was supplied to ssl.get_server_certificate() function, the identity of the certificate is not checked.
Title ssl.get_server_certificate(addr, ca_certs=...) verifies the chain but never the identity
References
Metrics cvssV4_0

{'score': 0, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
PSF
Published
Updated
Nov 12, 2026, 4:30 PM
Reserved
Aug 11, 2026, 3:22 PM
Status
Awaiting Analysis
Published
Nov 9, 2026, 3:17 PM
Modified
Nov 12, 2026, 5:17 PM